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12002022220 = 2251967471407
BaseRepresentation
bin10110010110110000…
…00101001101001100
31010222102220220022111
423023120011031030
5144040004202340
65302540553404
7603264335266
oct131330051514
933872826274
1012002022220
1150a9912a31
1223ab552864
1311936c20c6
1481bdc6b36
154a3a1eaea
hex2cb60534c

12002022220 has 48 divisors (see below), whose sum is σ = 26926824960. Its totient is φ = 4480242624.

The previous prime is 12002022143. The next prime is 12002022233. The reversal of 12002022220 is 2222020021.

It is a self number, because there is not a number n which added to its sum of digits gives 12002022220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210244 + ... + 261163.

It is an arithmetic number, because the mean of its divisors is an integer number (560975520).

Almost surely, 212002022220 is an apocalyptic number.

12002022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002022220 is an abundant number, since it is smaller than the sum of its proper divisors (14924802740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12002022220 is a wasteful number, since it uses less digits than its factorization.

12002022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471502 (or 471500 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 12002022220 its reverse (2222020021), we get a palindrome (14224042241).

The spelling of 12002022220 in words is "twelve billion, two million, twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 67 76 95 134 190 268 335 380 670 1273 1340 2546 5092 6365 12730 25460 471407 942814 1885628 2357035 4714070 8956733 9428140 17913466 31584269 35826932 44783665 63168538 89567330 126337076 157921345 179134660 315842690 600101111 631685380 1200202222 2400404444 3000505555 6001011110 12002022220